/*
 * Copyright 2017-2025 Lenses.io Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.lenses.streamreactor.connect.cloud.common.source

import io.lenses.streamreactor.connect.cloud.common.model.location.CloudLocation
import io.lenses.streamreactor.connect.cloud.common.source.SourceWatermark.partition
import org.apache.kafka.connect.source.SourceTaskContext

import scala.jdk.CollectionConverters.MapHasAsScala
import scala.util.Try

object SourceContextReader {

  def getCurrentOffset(
    context:    () => SourceTaskContext,
  )(sourceRoot: CloudLocation,
  ): Option[CloudLocation] = {
    val key = partition(sourceRoot)
    for {
      offsetMap          <- Try(context().offsetStorageReader.offset(key).asScala).toOption.filterNot(_ == null)
      locationWithOffset <- SourceWatermark.mapToOffset(sourceRoot, offsetMap.toMap)
    } yield locationWithOffset

  }

}
